diff --git a/DEPS b/DEPS
index dd1215c..5b68b38 100644
--- a/DEPS
+++ b/DEPS
@@ -19,7 +19,7 @@
 
 vars = {
   'chromium_git': 'https://chromium.googlesource.com',
-  'base_revision': '0032c8e1a72eb85d947d8df8de503caa62b4d0a8',
+  'base_revision': '9e74307b276b2f9988005c0e97e85ee222586f79',
   'boringssl_revision': '2deb984187ce8f6c739c780e7fe95e859e93b3da',
   'buildtools_revision': '222bd42ce39d1bd8f08fe089b066f49c469e1cdf',
   'gurl_revision': '718eee97ed6a4df41d14726eb2eddc871d9eaaa3',
diff --git a/crypto/openssl_util.cc b/crypto/openssl_util.cc
index d89857f..f5b20c9 100644
--- a/crypto/openssl_util.cc
+++ b/crypto/openssl_util.cc
@@ -35,11 +35,12 @@
     //      we can't control the order the AtExit handlers will run in so
     //      allowing the global environment to leak at least ensures it is
     //      available for those other singletons to reliably cleanup.
-    return Singleton<OpenSSLInitSingleton,
-               LeakySingletonTraits<OpenSSLInitSingleton> >::get();
+    return base::Singleton<
+        OpenSSLInitSingleton,
+        base::LeakySingletonTraits<OpenSSLInitSingleton>>::get();
   }
  private:
-  friend struct DefaultSingletonTraits<OpenSSLInitSingleton>;
+  friend struct base::DefaultSingletonTraits<OpenSSLInitSingleton>;
   OpenSSLInitSingleton() {
 #if defined(OS_ANDROID) && defined(ARCH_CPU_ARMEL)
     const bool has_neon =
diff --git a/mojo/message_pump/handle_watcher.cc b/mojo/message_pump/handle_watcher.cc
index c330d31..623fc2b 100644
--- a/mojo/message_pump/handle_watcher.cc
+++ b/mojo/message_pump/handle_watcher.cc
@@ -189,7 +189,7 @@
 
   typedef std::vector<RequestData> Requests;
 
-  friend struct DefaultSingletonTraits<WatcherThreadManager>;
+  friend struct base::DefaultSingletonTraits<WatcherThreadManager>;
 
   WatcherThreadManager();
 
@@ -221,7 +221,7 @@
 }
 
 WatcherThreadManager* WatcherThreadManager::GetInstance() {
-  return Singleton<WatcherThreadManager>::get();
+  return base::Singleton<WatcherThreadManager>::get();
 }
 
 WatcherID WatcherThreadManager::StartWatching(
diff --git a/net/cert/cert_database.cc b/net/cert/cert_database.cc
index 8591122..7b85fc7 100644
--- a/net/cert/cert_database.cc
+++ b/net/cert/cert_database.cc
@@ -13,7 +13,8 @@
 CertDatabase* CertDatabase::GetInstance() {
   // Leaky so it can be initialized on worker threads, and because there is no
   // useful cleanup to do.
-  return Singleton<CertDatabase, LeakySingletonTraits<CertDatabase> >::get();
+  return base::Singleton<CertDatabase,
+                         base::LeakySingletonTraits<CertDatabase>>::get();
 }
 
 void CertDatabase::AddObserver(Observer* observer) {
diff --git a/net/cert/cert_database.h b/net/cert/cert_database.h
index 64f5069..8b9b82e 100644
--- a/net/cert/cert_database.h
+++ b/net/cert/cert_database.h
@@ -11,9 +11,9 @@
 #include "net/base/net_export.h"
 #include "net/cert/x509_certificate.h"
 
+namespace base {
 template <typename T> struct DefaultSingletonTraits;
 
-namespace base {
 template <class ObserverType>
 class ObserverListThreadSafe;
 }
@@ -105,7 +105,7 @@
   void NotifyObserversOfCACertChanged(const X509Certificate* cert);
 
  private:
-  friend struct DefaultSingletonTraits<CertDatabase>;
+  friend struct base::DefaultSingletonTraits<CertDatabase>;
 
   CertDatabase();
   ~CertDatabase();
diff --git a/net/cert/x509_certificate_openssl.cc b/net/cert/x509_certificate_openssl.cc
index 0d92a83..6e80361 100644
--- a/net/cert/x509_certificate_openssl.cc
+++ b/net/cert/x509_certificate_openssl.cc
@@ -142,8 +142,8 @@
     // We allow the X509 store to leak, because it is used from a non-joinable
     // worker that is not stopped on shutdown, hence may still be using
     // OpenSSL library after the AtExit runner has completed.
-    return Singleton<X509InitSingleton,
-                     LeakySingletonTraits<X509InitSingleton> >::get();
+    return base::Singleton<X509InitSingleton, base::LeakySingletonTraits<
+                                                  X509InitSingleton>>::get();
   }
   X509_STORE* store() const { return store_.get(); }
 
@@ -155,7 +155,7 @@
   }
 
  private:
-  friend struct DefaultSingletonTraits<X509InitSingleton>;
+  friend struct base::DefaultSingletonTraits<X509InitSingleton>;
   X509InitSingleton() {
     crypto::EnsureOpenSSLInit();
     ResetCertStore();
diff --git a/net/ftp/ftp_util.cc b/net/ftp/ftp_util.cc
index 91854c4..e398d45 100644
--- a/net/ftp/ftp_util.cc
+++ b/net/ftp/ftp_util.cc
@@ -132,7 +132,7 @@
 class AbbreviatedMonthsMap {
  public:
   static AbbreviatedMonthsMap* GetInstance() {
-    return Singleton<AbbreviatedMonthsMap>::get();
+    return base::Singleton<AbbreviatedMonthsMap>::get();
   }
 
   // Converts abbreviated month name |text| to its number (in range 1-12).
@@ -150,7 +150,7 @@
   }
 
  private:
-  friend struct DefaultSingletonTraits<AbbreviatedMonthsMap>;
+  friend struct base::DefaultSingletonTraits<AbbreviatedMonthsMap>;
 
   // Constructor, initializes the map based on ICU data. It is much faster
   // to do that just once.
diff --git a/net/quic/crypto/common_cert_set.cc b/net/quic/crypto/common_cert_set.cc
index 1a78f1b..d4603c7 100644
--- a/net/quic/crypto/common_cert_set.cc
+++ b/net/quic/crypto/common_cert_set.cc
@@ -137,14 +137,14 @@
   }
 
   static CommonCertSetsQUIC* GetInstance() {
-    return Singleton<CommonCertSetsQUIC>::get();
+    return base::Singleton<CommonCertSetsQUIC>::get();
   }
 
  private:
   CommonCertSetsQUIC() {}
   ~CommonCertSetsQUIC() override {}
 
-  friend struct DefaultSingletonTraits<CommonCertSetsQUIC>;
+  friend struct base::DefaultSingletonTraits<CommonCertSetsQUIC>;
   DISALLOW_COPY_AND_ASSIGN(CommonCertSetsQUIC);
 };
 
diff --git a/net/quic/crypto/quic_random.cc b/net/quic/crypto/quic_random.cc
index 6b34465..941b389 100644
--- a/net/quic/crypto/quic_random.cc
+++ b/net/quic/crypto/quic_random.cc
@@ -25,12 +25,12 @@
   DefaultRandom() {};
   ~DefaultRandom() override {}
 
-  friend struct DefaultSingletonTraits<DefaultRandom>;
+  friend struct base::DefaultSingletonTraits<DefaultRandom>;
   DISALLOW_COPY_AND_ASSIGN(DefaultRandom);
 };
 
 DefaultRandom* DefaultRandom::GetInstance() {
-  return Singleton<DefaultRandom>::get();
+  return base::Singleton<DefaultRandom>::get();
 }
 
 void DefaultRandom::RandBytes(void* data, size_t len) {
diff --git a/net/socket/ssl_client_socket_openssl.cc b/net/socket/ssl_client_socket_openssl.cc
index 541efc5..85b309c 100644
--- a/net/socket/ssl_client_socket_openssl.cc
+++ b/net/socket/ssl_client_socket_openssl.cc
@@ -202,7 +202,9 @@
 
 class SSLClientSocketOpenSSL::SSLContext {
  public:
-  static SSLContext* GetInstance() { return Singleton<SSLContext>::get(); }
+  static SSLContext* GetInstance() {
+    return base::Singleton<SSLContext>::get();
+  }
   SSL_CTX* ssl_ctx() { return ssl_ctx_.get(); }
   SSLClientSessionCacheOpenSSL* session_cache() { return &session_cache_; }
 
@@ -221,7 +223,7 @@
   static const SSL_PRIVATE_KEY_METHOD kPrivateKeyMethod;
 
  private:
-  friend struct DefaultSingletonTraits<SSLContext>;
+  friend struct base::DefaultSingletonTraits<SSLContext>;
 
   SSLContext() : session_cache_(SSLClientSessionCacheOpenSSL::Config()) {
     crypto::EnsureOpenSSLInit();
diff --git a/net/socket/websocket_endpoint_lock_manager.cc b/net/socket/websocket_endpoint_lock_manager.cc
index 8a218df..42dab82 100644
--- a/net/socket/websocket_endpoint_lock_manager.cc
+++ b/net/socket/websocket_endpoint_lock_manager.cc
@@ -33,7 +33,7 @@
 }
 
 WebSocketEndpointLockManager* WebSocketEndpointLockManager::GetInstance() {
-  return Singleton<WebSocketEndpointLockManager>::get();
+  return base::Singleton<WebSocketEndpointLockManager>::get();
 }
 
 int WebSocketEndpointLockManager::LockEndpoint(const IPEndPoint& endpoint,
diff --git a/net/socket/websocket_endpoint_lock_manager.h b/net/socket/websocket_endpoint_lock_manager.h
index bddd545..f3887b8 100644
--- a/net/socket/websocket_endpoint_lock_manager.h
+++ b/net/socket/websocket_endpoint_lock_manager.h
@@ -146,7 +146,7 @@
   // object.
   base::WeakPtrFactory<WebSocketEndpointLockManager> weak_factory_;
 
-  friend struct DefaultSingletonTraits<WebSocketEndpointLockManager>;
+  friend struct base::DefaultSingletonTraits<WebSocketEndpointLockManager>;
 
   DISALLOW_COPY_AND_ASSIGN(WebSocketEndpointLockManager);
 };
diff --git a/net/spdy/hpack/hpack_constants.cc b/net/spdy/hpack/hpack_constants.cc
index 28385f9..59a55da 100644
--- a/net/spdy/hpack/hpack_constants.cc
+++ b/net/spdy/hpack/hpack_constants.cc
@@ -29,7 +29,7 @@
   }
 
   static SharedHpackHuffmanTable* GetInstance() {
-    return Singleton<SharedHpackHuffmanTable>::get();
+    return base::Singleton<SharedHpackHuffmanTable>::get();
   }
 
   scoped_ptr<const HpackHuffmanTable> table;
@@ -48,7 +48,7 @@
   }
 
   static SharedHpackStaticTable* GetInstance() {
-    return Singleton<SharedHpackStaticTable>::get();
+    return base::Singleton<SharedHpackStaticTable>::get();
   }
 
   scoped_ptr<const HpackStaticTable> table;
diff --git a/net/ssl/openssl_client_key_store.cc b/net/ssl/openssl_client_key_store.cc
index 0bc97be..de1199f 100644
--- a/net/ssl/openssl_client_key_store.cc
+++ b/net/ssl/openssl_client_key_store.cc
@@ -117,7 +117,7 @@
 }
 
 OpenSSLClientKeyStore* OpenSSLClientKeyStore::GetInstance() {
-  return Singleton<OpenSSLClientKeyStore>::get();
+  return base::Singleton<OpenSSLClientKeyStore>::get();
 }
 
 }  // namespace net
diff --git a/net/ssl/openssl_client_key_store.h b/net/ssl/openssl_client_key_store.h
index bba19a3..16904ef 100644
--- a/net/ssl/openssl_client_key_store.h
+++ b/net/ssl/openssl_client_key_store.h
@@ -90,7 +90,7 @@
 
   std::vector<KeyPair> pairs_;
 
-  friend struct DefaultSingletonTraits<OpenSSLClientKeyStore>;
+  friend struct base::DefaultSingletonTraits<OpenSSLClientKeyStore>;
 
   DISALLOW_COPY_AND_ASSIGN(OpenSSLClientKeyStore);
 };
diff --git a/net/tools/quic/quic_in_memory_cache.cc b/net/tools/quic/quic_in_memory_cache.cc
index 13788bf..2ae5c49 100644
--- a/net/tools/quic/quic_in_memory_cache.cc
+++ b/net/tools/quic/quic_in_memory_cache.cc
@@ -27,7 +27,7 @@
 
 // static
 QuicInMemoryCache* QuicInMemoryCache::GetInstance() {
-  return Singleton<QuicInMemoryCache>::get();
+  return base::Singleton<QuicInMemoryCache>::get();
 }
 
 const QuicInMemoryCache::Response* QuicInMemoryCache::GetResponse(
diff --git a/net/tools/quic/quic_in_memory_cache.h b/net/tools/quic/quic_in_memory_cache.h
index e10e02d..e96ad01 100644
--- a/net/tools/quic/quic_in_memory_cache.h
+++ b/net/tools/quic/quic_in_memory_cache.h
@@ -12,8 +12,12 @@
 #include "base/strings/string_piece.h"
 #include "net/spdy/spdy_framer.h"
 
+namespace base {
+
 template <typename Type> struct DefaultSingletonTraits;
 
+}  // namespace base
+
 namespace net {
 namespace tools {
 
@@ -99,7 +103,7 @@
  private:
   typedef base::hash_map<std::string, Response*> ResponseMap;
 
-  friend struct DefaultSingletonTraits<QuicInMemoryCache>;
+  friend struct base::DefaultSingletonTraits<QuicInMemoryCache>;
   friend class test::QuicInMemoryCachePeer;
 
   QuicInMemoryCache();
diff --git a/net/url_request/url_request_job_manager.cc b/net/url_request/url_request_job_manager.cc
index 39c21b7..092708f 100644
--- a/net/url_request/url_request_job_manager.cc
+++ b/net/url_request/url_request_job_manager.cc
@@ -41,7 +41,7 @@
 
 // static
 URLRequestJobManager* URLRequestJobManager::GetInstance() {
-  return Singleton<URLRequestJobManager>::get();
+  return base::Singleton<URLRequestJobManager>::get();
 }
 
 URLRequestJob* URLRequestJobManager::CreateJob(
diff --git a/net/url_request/url_request_job_manager.h b/net/url_request/url_request_job_manager.h
index 7729abb..422a982 100644
--- a/net/url_request/url_request_job_manager.h
+++ b/net/url_request/url_request_job_manager.h
@@ -11,7 +11,9 @@
 #include "net/base/net_export.h"
 #include "net/url_request/url_request.h"
 
+namespace base {
 template <typename T> struct DefaultSingletonTraits;
+}  // namespace base
 
 namespace net {
 
@@ -51,7 +53,7 @@
   static bool SupportsScheme(const std::string& scheme);
 
  private:
-  friend struct DefaultSingletonTraits<URLRequestJobManager>;
+  friend struct base::DefaultSingletonTraits<URLRequestJobManager>;
 
   URLRequestJobManager();
   ~URLRequestJobManager();
diff --git a/third_party/tcmalloc/chromium/src/deep-heap-profile.cc b/third_party/tcmalloc/chromium/src/deep-heap-profile.cc
deleted file mode 100644
index bbf002a..0000000
--- a/third_party/tcmalloc/chromium/src/deep-heap-profile.cc
+++ /dev/null
@@ -1,1161 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// ---
-// Author: Sainbayar Sukhbaatar
-//         Dai Mikurube
-//
-
-#include "deep-heap-profile.h"
-
-#ifdef USE_DEEP_HEAP_PROFILE
-#include <algorithm>
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <time.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>  // for getpagesize and getpid
-#endif  // HAVE_UNISTD_H
-
-#if defined(__linux__)
-#include <endian.h>
-#if !defined(__LITTLE_ENDIAN__) and !defined(__BIG_ENDIAN__)
-#if __BYTE_ORDER == __BIG_ENDIAN
-#define __BIG_ENDIAN__
-#endif  // __BYTE_ORDER == __BIG_ENDIAN
-#endif  // !defined(__LITTLE_ENDIAN__) and !defined(__BIG_ENDIAN__)
-#if defined(__BIG_ENDIAN__)
-#include <byteswap.h>
-#endif  // defined(__BIG_ENDIAN__)
-#endif  // defined(__linux__)
-#if defined(COMPILER_MSVC)
-#include <Winsock2.h>  // for gethostname
-#endif  // defined(COMPILER_MSVC)
-
-#include "base/cycleclock.h"
-#include "base/sysinfo.h"
-#include "internal_logging.h"  // for ASSERT, etc
-
-static const int kProfilerBufferSize = 1 << 20;
-static const int kHashTableSize = 179999;  // Same as heap-profile-table.cc.
-
-static const int PAGEMAP_BYTES = 8;
-static const int KPAGECOUNT_BYTES = 8;
-static const uint64 MAX_ADDRESS = kuint64max;
-
-// Tag strings in heap profile dumps.
-static const char kProfileHeader[] = "heap profile: ";
-static const char kProfileVersion[] = "DUMP_DEEP_6";
-static const char kMetaInformationHeader[] = "META:\n";
-static const char kMMapListHeader[] = "MMAP_LIST:\n";
-static const char kGlobalStatsHeader[] = "GLOBAL_STATS:\n";
-static const char kStacktraceHeader[] = "STACKTRACES:\n";
-static const char kProcSelfMapsHeader[] = "\nMAPPED_LIBRARIES:\n";
-
-static const char kVirtualLabel[] = "virtual";
-static const char kCommittedLabel[] = "committed";
-
-#if defined(__linux__)
-#define OS_NAME "linux"
-#elif defined(_WIN32) || defined(_WIN64)
-#define OS_NAME "windows"
-#else
-#define OS_NAME "unknown-os"
-#endif
-
-bool DeepHeapProfile::AppendCommandLine(TextBuffer* buffer) {
-#if defined(__linux__)
-  RawFD fd;
-  char filename[100];
-  char cmdline[4096];
-  snprintf(filename, sizeof(filename), "/proc/%d/cmdline",
-           static_cast<int>(getpid()));
-  fd = open(filename, O_RDONLY);
-  if (fd == kIllegalRawFD) {
-    RAW_VLOG(0, "Failed to open /proc/self/cmdline");
-    return false;
-  }
-
-  size_t length = read(fd, cmdline, sizeof(cmdline) - 1);
-  close(fd);
-
-  for (int i = 0; i < length; ++i)
-    if (cmdline[i] == '\0')
-      cmdline[i] = ' ';
-  cmdline[length] = '\0';
-
-  buffer->AppendString("CommandLine: ", 0);
-  buffer->AppendString(cmdline, 0);
-  buffer->AppendChar('\n');
-
-  return true;
-#else
-  return false;
-#endif
-}
-
-#if defined(_WIN32) || defined(_WIN64)
-
-// TODO(peria): Implement this function.
-void DeepHeapProfile::MemoryInfoGetterWindows::Initialize() {
-}
-
-// TODO(peria): Implement this function.
-size_t DeepHeapProfile::MemoryInfoGetterWindows::CommittedSize(
-    uint64 first_address,
-    uint64 last_address,
-    TextBuffer* buffer) const {
-  return 0;
-}
-
-// TODO(peria): Implement this function.
-bool DeepHeapProfile::MemoryInfoGetterWindows::IsPageCountAvailable() const {
-  return false;
-}
-
-#endif  // defined(_WIN32) || defined(_WIN64)
-
-#if defined(__linux__)
-
-void DeepHeapProfile::MemoryInfoGetterLinux::Initialize() {
-  char filename[100];
-  snprintf(filename, sizeof(filename), "/proc/%d/pagemap",
-           static_cast<int>(getpid()));
-  pagemap_fd_ = open(filename, O_RDONLY);
-  RAW_CHECK(pagemap_fd_ != -1, "Failed to open /proc/self/pagemap");
-
-  if (pageframe_type_ == DUMP_PAGECOUNT) {
-    snprintf(filename, sizeof(filename), "/proc/kpagecount");
-    kpagecount_fd_ = open(filename, O_RDONLY);
-    if (kpagecount_fd_ == -1)
-      RAW_VLOG(0, "Failed to open /proc/kpagecount");
-  }
-}
-
-size_t DeepHeapProfile::MemoryInfoGetterLinux::CommittedSize(
-    uint64 first_address,
-    uint64 last_address,
-    DeepHeapProfile::TextBuffer* buffer) const {
-  int page_size = getpagesize();
-  uint64 page_address = (first_address / page_size) * page_size;
-  size_t committed_size = 0;
-  size_t pageframe_list_length = 0;
-
-  Seek(first_address);
-
-  // Check every page on which the allocation resides.
-  while (page_address <= last_address) {
-    // Read corresponding physical page.
-    State state;
-    // TODO(dmikurube): Read pagemap in bulk for speed.
-    // TODO(dmikurube): Consider using mincore(2).
-    if (Read(&state, pageframe_type_ != DUMP_NO_PAGEFRAME) == false) {
-      // We can't read the last region (e.g vsyscall).
-#ifndef NDEBUG
-      RAW_VLOG(0, "pagemap read failed @ %#llx %" PRId64 " bytes",
-              first_address, last_address - first_address + 1);
-#endif
-      return 0;
-    }
-
-    // Dump pageframes of resident pages.  Non-resident pages are just skipped.
-    if (pageframe_type_ != DUMP_NO_PAGEFRAME &&
-        buffer != NULL && state.pfn != 0) {
-      if (pageframe_list_length == 0) {
-        buffer->AppendString("  PF:", 0);
-        pageframe_list_length = 5;
-      }
-      buffer->AppendChar(' ');
-      if (page_address < first_address)
-        buffer->AppendChar('<');
-      buffer->AppendBase64(state.pfn, 4);
-      pageframe_list_length += 5;
-      if (pageframe_type_ == DUMP_PAGECOUNT && IsPageCountAvailable()) {
-        uint64 pagecount = ReadPageCount(state.pfn);
-        // Assume pagecount == 63 if the pageframe is mapped more than 63 times.
-        if (pagecount > 63)
-          pagecount = 63;
-        buffer->AppendChar('#');
-        buffer->AppendBase64(pagecount, 1);
-        pageframe_list_length += 2;
-      }
-      if (last_address < page_address - 1 + page_size)
-        buffer->AppendChar('>');
-      // Begins a new line every 94 characters.
-      if (pageframe_list_length > 94) {
-        buffer->AppendChar('\n');
-        pageframe_list_length = 0;
-      }
-    }
-
-    if (state.is_committed) {
-      // Calculate the size of the allocation part in this page.
-      size_t bytes = page_size;
-
-      // If looking at the last page in a given region.
-      if (last_address <= page_address - 1 + page_size) {
-        bytes = last_address - page_address + 1;
-      }
-
-      // If looking at the first page in a given region.
-      if (page_address < first_address) {
-        bytes -= first_address - page_address;
-      }
-
-      committed_size += bytes;
-    }
-    if (page_address > MAX_ADDRESS - page_size) {
-      break;
-    }
-    page_address += page_size;
-  }
-
-  if (pageframe_type_ != DUMP_NO_PAGEFRAME &&
-      buffer != NULL && pageframe_list_length != 0) {
-    buffer->AppendChar('\n');
-  }
-
-  return committed_size;
-}
-
-uint64 DeepHeapProfile::MemoryInfoGetterLinux::ReadPageCount(uint64 pfn) const {
-  int64 index = pfn * KPAGECOUNT_BYTES;
-  int64 offset = lseek64(kpagecount_fd_, index, SEEK_SET);
-  RAW_DCHECK(offset == index, "Failed in seeking in kpagecount.");
-
-  uint64 kpagecount_value;
-  int result = read(kpagecount_fd_, &kpagecount_value, KPAGECOUNT_BYTES);
-  if (result != KPAGECOUNT_BYTES)
-    return 0;
-
-  return kpagecount_value;
-}
-
-bool DeepHeapProfile::MemoryInfoGetterLinux::Seek(uint64 address) const {
-  int64 index = (address / getpagesize()) * PAGEMAP_BYTES;
-  RAW_DCHECK(pagemap_fd_ != -1, "Failed to seek in /proc/self/pagemap");
-  int64 offset = lseek64(pagemap_fd_, index, SEEK_SET);
-  RAW_DCHECK(offset == index, "Failed in seeking.");
-  return offset >= 0;
-}
-
-bool DeepHeapProfile::MemoryInfoGetterLinux::Read(
-    State* state, bool get_pfn) const {
-  static const uint64 U64_1 = 1;
-  static const uint64 PFN_FILTER = (U64_1 << 55) - U64_1;
-  static const uint64 PAGE_PRESENT = U64_1 << 63;
-  static const uint64 PAGE_SWAP = U64_1 << 62;
-  static const uint64 PAGE_RESERVED = U64_1 << 61;
-  static const uint64 FLAG_NOPAGE = U64_1 << 20;
-  static const uint64 FLAG_KSM = U64_1 << 21;
-  static const uint64 FLAG_MMAP = U64_1 << 11;
-
-  uint64 pagemap_value;
-  RAW_DCHECK(pagemap_fd_ != -1, "Failed to read from /proc/self/pagemap");
-  int result = read(pagemap_fd_, &pagemap_value, PAGEMAP_BYTES);
-  if (result != PAGEMAP_BYTES) {
-    return false;
-  }
-
-  // Check if the page is committed.
-  state->is_committed = (pagemap_value & (PAGE_PRESENT | PAGE_SWAP));
-
-  state->is_present = (pagemap_value & PAGE_PRESENT);
-  state->is_swapped = (pagemap_value & PAGE_SWAP);
-  state->is_shared = false;
-
-  if (get_pfn && state->is_present && !state->is_swapped)
-    state->pfn = (pagemap_value & PFN_FILTER);
-  else
-    state->pfn = 0;
-
-  return true;
-}
-
-bool DeepHeapProfile::MemoryInfoGetterLinux::IsPageCountAvailable() const {
-  return kpagecount_fd_ != -1;
-}
-
-#endif  // defined(__linux__)
-
-DeepHeapProfile::MemoryResidenceInfoGetterInterface::
-    MemoryResidenceInfoGetterInterface() {}
-
-DeepHeapProfile::MemoryResidenceInfoGetterInterface::
-    ~MemoryResidenceInfoGetterInterface() {}
-
-DeepHeapProfile::MemoryResidenceInfoGetterInterface*
-    DeepHeapProfile::MemoryResidenceInfoGetterInterface::Create(
-        PageFrameType pageframe_type) {
-#if defined(_WIN32) || defined(_WIN64)
-  return new MemoryInfoGetterWindows(pageframe_type);
-#elif defined(__linux__)
-  return new MemoryInfoGetterLinux(pageframe_type);
-#else
-  return NULL;
-#endif
-}
-
-DeepHeapProfile::DeepHeapProfile(HeapProfileTable* heap_profile,
-                                 const char* prefix,
-                                 enum PageFrameType pageframe_type)
-    : memory_residence_info_getter_(
-          MemoryResidenceInfoGetterInterface::Create(pageframe_type)),
-      most_recent_pid_(-1),
-      stats_(),
-      dump_count_(0),
-      filename_prefix_(NULL),
-      deep_table_(kHashTableSize, heap_profile->alloc_, heap_profile->dealloc_),
-      pageframe_type_(pageframe_type),
-      heap_profile_(heap_profile) {
-  // Copy filename prefix.
-  const int prefix_length = strlen(prefix);
-  filename_prefix_ =
-      reinterpret_cast<char*>(heap_profile_->alloc_(prefix_length + 1));
-  memcpy(filename_prefix_, prefix, prefix_length);
-  filename_prefix_[prefix_length] = '\0';
-
-  strncpy(run_id_, "undetermined-run-id", sizeof(run_id_));
-}
-
-DeepHeapProfile::~DeepHeapProfile() {
-  heap_profile_->dealloc_(filename_prefix_);
-  delete memory_residence_info_getter_;
-}
-
-// Global malloc() should not be used in this function.
-// Use LowLevelAlloc if required.
-void DeepHeapProfile::DumpOrderedProfile(const char* reason,
-                                         char raw_buffer[],
-                                         int buffer_size,
-                                         RawFD fd) {
-  TextBuffer buffer(raw_buffer, buffer_size, fd);
-
-#ifndef NDEBUG
-  int64 starting_cycles = CycleClock::Now();
-#endif
-
-  // Get the time before starting snapshot.
-  // TODO(dmikurube): Consider gettimeofday if available.
-  time_t time_value = time(NULL);
-
-  ++dump_count_;
-
-  // Re-open files in /proc/pid/ if the process is newly forked one.
-  if (most_recent_pid_ != getpid()) {
-    char hostname[64];
-    if (0 == gethostname(hostname, sizeof(hostname))) {
-      char* dot = strchr(hostname, '.');
-      if (dot != NULL)
-        *dot = '\0';
-    } else {
-      strcpy(hostname, "unknown");
-    }
-
-    most_recent_pid_ = getpid();
-
-    snprintf(run_id_, sizeof(run_id_), "%s-" OS_NAME "-%d-%lu",
-             hostname, most_recent_pid_, time(NULL));
-
-    if (memory_residence_info_getter_)
-      memory_residence_info_getter_->Initialize();
-    deep_table_.ResetIsLogged();
-
-    // Write maps into "|filename_prefix_|.<pid>.maps".
-    WriteProcMaps(filename_prefix_, raw_buffer, buffer_size);
-  }
-
-  // Reset committed sizes of buckets.
-  deep_table_.ResetCommittedSize();
-
-  // Record committed sizes.
-  stats_.SnapshotAllocations(this);
-
-  // TODO(dmikurube): Eliminate dynamic memory allocation caused by snprintf.
-  // glibc's snprintf internally allocates memory by alloca normally, but it
-  // allocates memory by malloc if large memory is required.
-
-  buffer.AppendString(kProfileHeader, 0);
-  buffer.AppendString(kProfileVersion, 0);
-  buffer.AppendString("\n", 0);
-
-  // Fill buffer with meta information.
-  buffer.AppendString(kMetaInformationHeader, 0);
-
-  buffer.AppendString("Time: ", 0);
-  buffer.AppendUnsignedLong(time_value, 0);
-  buffer.AppendChar('\n');
-
-  if (reason != NULL) {
-    buffer.AppendString("Reason: ", 0);
-    buffer.AppendString(reason, 0);
-    buffer.AppendChar('\n');
-  }
-
-  AppendCommandLine(&buffer);
-
-  buffer.AppendString("RunID: ", 0);
-  buffer.AppendString(run_id_, 0);
-  buffer.AppendChar('\n');
-
-  buffer.AppendString("PageSize: ", 0);
-  buffer.AppendInt(getpagesize(), 0, 0);
-  buffer.AppendChar('\n');
-
-  // Assumes the physical memory <= 64GB (PFN < 2^24).
-  if (pageframe_type_ == DUMP_PAGECOUNT && memory_residence_info_getter_ &&
-      memory_residence_info_getter_->IsPageCountAvailable()) {
-    buffer.AppendString("PageFrame: 24,Base64,PageCount", 0);
-    buffer.AppendChar('\n');
-  } else if (pageframe_type_ != DUMP_NO_PAGEFRAME) {
-    buffer.AppendString("PageFrame: 24,Base64", 0);
-    buffer.AppendChar('\n');
-  }
-
-  // Fill buffer with the global stats.
-  buffer.AppendString(kMMapListHeader, 0);
-
-  stats_.SnapshotMaps(memory_residence_info_getter_, this, &buffer);
-
-  // Fill buffer with the global stats.
-  buffer.AppendString(kGlobalStatsHeader, 0);
-
-  stats_.Unparse(&buffer);
-
-  buffer.AppendString(kStacktraceHeader, 0);
-  buffer.AppendString(kVirtualLabel, 10);
-  buffer.AppendChar(' ');
-  buffer.AppendString(kCommittedLabel, 10);
-  buffer.AppendString("\n", 0);
-
-  // Fill buffer.
-  deep_table_.UnparseForStats(&buffer);
-
-  buffer.Flush();
-
-  // Write the bucket listing into a .bucket file.
-  deep_table_.WriteForBucketFile(
-      filename_prefix_, dump_count_, raw_buffer, buffer_size);
-
-#ifndef NDEBUG
-  int64 elapsed_cycles = CycleClock::Now() - starting_cycles;
-  double elapsed_seconds = elapsed_cycles / CyclesPerSecond();
-  RAW_VLOG(0, "Time spent on DeepProfiler: %.3f sec\n", elapsed_seconds);
-#endif
-}
-
-int DeepHeapProfile::TextBuffer::Size() {
-  return size_;
-}
-
-int DeepHeapProfile::TextBuffer::FilledBytes() {
-  return cursor_;
-}
-
-void DeepHeapProfile::TextBuffer::Clear() {
-  cursor_ = 0;
-}
-
-void DeepHeapProfile::TextBuffer::Flush() {
-  RawWrite(fd_, buffer_, cursor_);
-  cursor_ = 0;
-}
-
-// TODO(dmikurube): These Append* functions should not use snprintf.
-bool DeepHeapProfile::TextBuffer::AppendChar(char value) {
-  return ForwardCursor(snprintf(buffer_ + cursor_, size_ - cursor_,
-                                "%c", value));
-}
-
-bool DeepHeapProfile::TextBuffer::AppendString(const char* value, int width) {
-  char* position = buffer_ + cursor_;
-  int available = size_ - cursor_;
-  int appended;
-  if (width == 0)
-    appended = snprintf(position, available, "%s", value);
-  else
-    appended = snprintf(position, available, "%*s",
-                        width, value);
-  return ForwardCursor(appended);
-}
-
-bool DeepHeapProfile::TextBuffer::AppendInt(int value, int width,
-                                            bool leading_zero) {
-  char* position = buffer_ + cursor_;
-  int available = size_ - cursor_;
-  int appended;
-  if (width == 0)
-    appended = snprintf(position, available, "%d", value);
-  else if (leading_zero)
-    appended = snprintf(position, available, "%0*d", width, value);
-  else
-    appended = snprintf(position, available, "%*d", width, value);
-  return ForwardCursor(appended);
-}
-
-bool DeepHeapProfile::TextBuffer::AppendLong(long value, int width) {
-  char* position = buffer_ + cursor_;
-  int available = size_ - cursor_;
-  int appended;
-  if (width == 0)
-    appended = snprintf(position, available, "%ld", value);
-  else
-    appended = snprintf(position, available, "%*ld", width, value);
-  return ForwardCursor(appended);
-}
-
-bool DeepHeapProfile::TextBuffer::AppendUnsignedLong(unsigned long value,
-                                                     int width) {
-  char* position = buffer_ + cursor_;
-  int available = size_ - cursor_;
-  int appended;
-  if (width == 0)
-    appended = snprintf(position, available, "%lu", value);
-  else
-    appended = snprintf(position, available, "%*lu", width, value);
-  return ForwardCursor(appended);
-}
-
-bool DeepHeapProfile::TextBuffer::AppendInt64(int64 value, int width) {
-  char* position = buffer_ + cursor_;
-  int available = size_ - cursor_;
-  int appended;
-  if (width == 0)
-    appended = snprintf(position, available, "%" PRId64, value);
-  else
-    appended = snprintf(position, available, "%*" PRId64, width, value);
-  return ForwardCursor(appended);
-}
-
-bool DeepHeapProfile::TextBuffer::AppendPtr(uint64 value, int width) {
-  char* position = buffer_ + cursor_;
-  int available = size_ - cursor_;
-  int appended;
-  if (width == 0)
-    appended = snprintf(position, available, "%" PRIx64, value);
-  else
-    appended = snprintf(position, available, "%0*" PRIx64, width, value);
-  return ForwardCursor(appended);
-}
-
-bool DeepHeapProfile::TextBuffer::AppendBase64(uint64 value, int width) {
-  static const char base64[65] =
-      "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
-#if defined(__BIG_ENDIAN__)
-  value = bswap_64(value);
-#endif
-  for (int shift = (width - 1) * 6; shift >= 0; shift -= 6) {
-    if (!AppendChar(base64[(value >> shift) & 0x3f]))
-      return false;
-  }
-  return true;
-}
-
-bool DeepHeapProfile::TextBuffer::ForwardCursor(int appended) {
-  if (appended < 0 || appended >= size_ - cursor_)
-    return false;
-  cursor_ += appended;
-  if (cursor_ > size_ * 4 / 5)
-    Flush();
-  return true;
-}
-
-void DeepHeapProfile::DeepBucket::UnparseForStats(TextBuffer* buffer) {
-  buffer->AppendInt64(bucket->alloc_size - bucket->free_size, 10);
-  buffer->AppendChar(' ');
-  buffer->AppendInt64(committed_size, 10);
-  buffer->AppendChar(' ');
-  buffer->AppendInt(bucket->allocs, 6, false);
-  buffer->AppendChar(' ');
-  buffer->AppendInt(bucket->frees, 6, false);
-  buffer->AppendString(" @ ", 0);
-  buffer->AppendInt(id, 0, false);
-  buffer->AppendString("\n", 0);
-}
-
-void DeepHeapProfile::DeepBucket::UnparseForBucketFile(TextBuffer* buffer) {
-  buffer->AppendInt(id, 0, false);
-  buffer->AppendChar(' ');
-  buffer->AppendString(is_mmap ? "mmap" : "malloc", 0);
-
-#if defined(TYPE_PROFILING)
-  buffer->AppendString(" t0x", 0);
-  buffer->AppendPtr(reinterpret_cast<uintptr_t>(type), 0);
-  if (type == NULL) {
-    buffer->AppendString(" nno_typeinfo", 0);
-  } else {
-    buffer->AppendString(" n", 0);
-    buffer->AppendString(type->name(), 0);
-  }
-#endif
-
-  for (int depth = 0; depth < bucket->depth; depth++) {
-    buffer->AppendString(" 0x", 0);
-    buffer->AppendPtr(reinterpret_cast<uintptr_t>(bucket->stack[depth]), 8);
-  }
-  buffer->AppendString("\n", 0);
-}
-
-DeepHeapProfile::DeepBucketTable::DeepBucketTable(
-    int table_size,
-    HeapProfileTable::Allocator alloc,
-    HeapProfileTable::DeAllocator dealloc)
-    : table_(NULL),
-      table_size_(table_size),
-      alloc_(alloc),
-      dealloc_(dealloc),
-      bucket_id_(0) {
-  const int bytes = table_size * sizeof(DeepBucket*);
-  table_ = reinterpret_cast<DeepBucket**>(alloc(bytes));
-  memset(table_, 0, bytes);
-}
-
-DeepHeapProfile::DeepBucketTable::~DeepBucketTable() {
-  ASSERT(table_ != NULL);
-  for (int db = 0; db < table_size_; db++) {
-    for (DeepBucket* x = table_[db]; x != 0; /**/) {
-      DeepBucket* db = x;
-      x = x->next;
-      dealloc_(db);
-    }
-  }
-  dealloc_(table_);
-}
-
-DeepHeapProfile::DeepBucket* DeepHeapProfile::DeepBucketTable::Lookup(
-    Bucket* bucket,
-#if defined(TYPE_PROFILING)
-    const std::type_info* type,
-#endif
-    bool is_mmap) {
-  // Make hash-value
-  uintptr_t h = 0;
-
-  AddToHashValue(reinterpret_cast<uintptr_t>(bucket), &h);
-  if (is_mmap) {
-    AddToHashValue(1, &h);
-  } else {
-    AddToHashValue(0, &h);
-  }
-
-#if defined(TYPE_PROFILING)
-  if (type == NULL) {
-    AddToHashValue(0, &h);
-  } else {
-    AddToHashValue(reinterpret_cast<uintptr_t>(type->name()), &h);
-  }
-#endif
-
-  FinishHashValue(&h);
-
-  // Lookup stack trace in table
-  unsigned int buck = ((unsigned int) h) % table_size_;
-  for (DeepBucket* db = table_[buck]; db != 0; db = db->next) {
-    if (db->bucket == bucket) {
-      return db;
-    }
-  }
-
-  // Create a new bucket
-  DeepBucket* db = reinterpret_cast<DeepBucket*>(alloc_(sizeof(DeepBucket)));
-  memset(db, 0, sizeof(*db));
-  db->bucket         = bucket;
-#if defined(TYPE_PROFILING)
-  db->type           = type;
-#endif
-  db->committed_size = 0;
-  db->is_mmap        = is_mmap;
-  db->id             = (bucket_id_++);
-  db->is_logged      = false;
-  db->next           = table_[buck];
-  table_[buck] = db;
-  return db;
-}
-
-// TODO(dmikurube): Eliminate dynamic memory allocation caused by snprintf.
-void DeepHeapProfile::DeepBucketTable::UnparseForStats(TextBuffer* buffer) {
-  for (int i = 0; i < table_size_; i++) {
-    for (DeepBucket* deep_bucket = table_[i];
-         deep_bucket != NULL;
-         deep_bucket = deep_bucket->next) {
-      Bucket* bucket = deep_bucket->bucket;
-      if (bucket->alloc_size - bucket->free_size == 0) {
-        continue;  // Skip empty buckets.
-      }
-      deep_bucket->UnparseForStats(buffer);
-    }
-  }
-}
-
-void DeepHeapProfile::DeepBucketTable::WriteForBucketFile(
-    const char* prefix, int dump_count, char raw_buffer[], int buffer_size) {
-  char filename[100];
-  snprintf(filename, sizeof(filename),
-           "%s.%05d.%04d.buckets", prefix, getpid(), dump_count);
-  RawFD fd = RawOpenForWriting(filename);
-  RAW_DCHECK(fd != kIllegalRawFD, "");
-
-  TextBuffer buffer(raw_buffer, buffer_size, fd);
-
-  for (int i = 0; i < table_size_; i++) {
-    for (DeepBucket* deep_bucket = table_[i];
-         deep_bucket != NULL;
-         deep_bucket = deep_bucket->next) {
-      Bucket* bucket = deep_bucket->bucket;
-      if (deep_bucket->is_logged) {
-        continue;  // Skip the bucket if it is already logged.
-      }
-      if (!deep_bucket->is_mmap &&
-          bucket->alloc_size - bucket->free_size <= 64) {
-        continue;  // Skip small malloc buckets.
-      }
-
-      deep_bucket->UnparseForBucketFile(&buffer);
-      deep_bucket->is_logged = true;
-    }
-  }
-
-  buffer.Flush();
-  RawClose(fd);
-}
-
-void DeepHeapProfile::DeepBucketTable::ResetCommittedSize() {
-  for (int i = 0; i < table_size_; i++) {
-    for (DeepBucket* deep_bucket = table_[i];
-         deep_bucket != NULL;
-         deep_bucket = deep_bucket->next) {
-      deep_bucket->committed_size = 0;
-    }
-  }
-}
-
-void DeepHeapProfile::DeepBucketTable::ResetIsLogged() {
-  for (int i = 0; i < table_size_; i++) {
-    for (DeepBucket* deep_bucket = table_[i];
-         deep_bucket != NULL;
-         deep_bucket = deep_bucket->next) {
-      deep_bucket->is_logged = false;
-    }
-  }
-}
-
-// This hash function is from HeapProfileTable::GetBucket.
-// static
-void DeepHeapProfile::DeepBucketTable::AddToHashValue(
-    uintptr_t add, uintptr_t* hash_value) {
-  *hash_value += add;
-  *hash_value += *hash_value << 10;
-  *hash_value ^= *hash_value >> 6;
-}
-
-// This hash function is from HeapProfileTable::GetBucket.
-// static
-void DeepHeapProfile::DeepBucketTable::FinishHashValue(uintptr_t* hash_value) {
-  *hash_value += *hash_value << 3;
-  *hash_value ^= *hash_value >> 11;
-}
-
-void DeepHeapProfile::RegionStats::Initialize() {
-  virtual_bytes_ = 0;
-  committed_bytes_ = 0;
-}
-
-uint64 DeepHeapProfile::RegionStats::Record(
-    const MemoryResidenceInfoGetterInterface* memory_residence_info_getter,
-    uint64 first_address,
-    uint64 last_address,
-    TextBuffer* buffer) {
-  uint64 committed = 0;
-  virtual_bytes_ += static_cast<size_t>(last_address - first_address + 1);
-  if (memory_residence_info_getter)
-    committed = memory_residence_info_getter->CommittedSize(first_address,
-                                                            last_address,
-                                                            buffer);
-  committed_bytes_ += committed;
-  return committed;
-}
-
-void DeepHeapProfile::RegionStats::Unparse(const char* name,
-                                           TextBuffer* buffer) {
-  buffer->AppendString(name, 25);
-  buffer->AppendChar(' ');
-  buffer->AppendLong(virtual_bytes_, 12);
-  buffer->AppendChar(' ');
-  buffer->AppendLong(committed_bytes_, 12);
-  buffer->AppendString("\n", 0);
-}
-
-// Snapshots all virtual memory mapping stats by merging mmap(2) records from
-// MemoryRegionMap and /proc/maps, the OS-level memory mapping information.
-// Memory regions described in /proc/maps, but which are not created by mmap,
-// are accounted as "unhooked" memory regions.
-//
-// This function assumes that every memory region created by mmap is covered
-// by VMA(s) described in /proc/maps except for http://crbug.com/189114.
-// Note that memory regions created with mmap don't align with borders of VMAs
-// in /proc/maps.  In other words, a memory region by mmap can cut across many
-// VMAs.  Also, of course a VMA can include many memory regions by mmap.
-// It means that the following situation happens:
-//
-// => Virtual address
-// <----- VMA #1 -----><----- VMA #2 ----->...<----- VMA #3 -----><- VMA #4 ->
-// ..< mmap #1 >.<- mmap #2 -><- mmap #3 ->...<- mmap #4 ->..<-- mmap #5 -->..
-//
-// It can happen easily as permission can be changed by mprotect(2) for a part
-// of a memory region.  A change in permission splits VMA(s).
-//
-// To deal with the situation, this function iterates over MemoryRegionMap and
-// /proc/maps independently.  The iterator for MemoryRegionMap is initialized
-// at the top outside the loop for /proc/maps, and it goes forward inside the
-// loop while comparing their addresses.
-//
-// TODO(dmikurube): Eliminate dynamic memory allocation caused by snprintf.
-void DeepHeapProfile::GlobalStats::SnapshotMaps(
-    const MemoryResidenceInfoGetterInterface* memory_residence_info_getter,
-    DeepHeapProfile* deep_profile,
-    TextBuffer* mmap_dump_buffer) {
-  MemoryRegionMap::LockHolder lock_holder;
-  ProcMapsIterator::Buffer procmaps_iter_buffer;
-  ProcMapsIterator procmaps_iter(0, &procmaps_iter_buffer);
-  uint64 vma_start_addr, vma_last_addr, offset;
-  int64 inode;
-  char* flags;
-  char* filename;
-  enum MapsRegionType type;
-
-  for (int i = 0; i < NUMBER_OF_MAPS_REGION_TYPES; ++i) {
-    all_[i].Initialize();
-    unhooked_[i].Initialize();
-  }
-  profiled_mmap_.Initialize();
-
-  MemoryRegionMap::RegionIterator mmap_iter =
-      MemoryRegionMap::BeginRegionLocked();
-  DeepBucket* deep_bucket = NULL;
-  if (mmap_iter != MemoryRegionMap::EndRegionLocked()) {
-    deep_bucket = GetInformationOfMemoryRegion(
-        mmap_iter, memory_residence_info_getter, deep_profile);
-  }
-
-  while (procmaps_iter.Next(&vma_start_addr, &vma_last_addr,
-                            &flags, &offset, &inode, &filename)) {
-    if (mmap_dump_buffer) {
-      char buffer[1024];
-      int written = procmaps_iter.FormatLine(buffer, sizeof(buffer),
-                                             vma_start_addr, vma_last_addr,
-                                             flags, offset, inode, filename, 0);
-      mmap_dump_buffer->AppendString(buffer, 0);
-    }
-
-    // 'vma_last_addr' should be the last inclusive address of the region.
-    vma_last_addr -= 1;
-    if (strcmp("[vsyscall]", filename) == 0) {
-      continue;  // Reading pagemap will fail in [vsyscall].
-    }
-
-    // TODO(dmikurube): |type| will be deprecated in the dump.
-    // See http://crbug.com/245603.
-    type = ABSENT;
-    if (filename[0] == '/') {
-      if (flags[2] == 'x')
-        type = FILE_EXEC;
-      else
-        type = FILE_NONEXEC;
-    } else if (filename[0] == '\0' || filename[0] == '\n') {
-      type = ANONYMOUS;
-    } else if (strcmp(filename, "[stack]") == 0) {
-      type = STACK;
-    } else {
-      type = OTHER;
-    }
-    // TODO(dmikurube): This |all_| count should be removed in future soon.
-    // See http://crbug.com/245603.
-    uint64 vma_total = all_[type].Record(
-        memory_residence_info_getter, vma_start_addr, vma_last_addr, NULL);
-    uint64 vma_subtotal = 0;
-
-    // TODO(dmikurube): Stop double-counting pagemap.
-    // It will be fixed when http://crbug.com/245603 finishes.
-    if (MemoryRegionMap::IsRecordingLocked()) {
-      uint64 cursor = vma_start_addr;
-      bool first = true;
-
-      // Iterates over MemoryRegionMap until the iterator moves out of the VMA.
-      do {
-        if (!first) {
-          cursor = mmap_iter->end_addr;
-          ++mmap_iter;
-          // Don't break here even if mmap_iter == EndRegionLocked().
-
-          if (mmap_iter != MemoryRegionMap::EndRegionLocked()) {
-            deep_bucket = GetInformationOfMemoryRegion(
-                mmap_iter, memory_residence_info_getter, deep_profile);
-          }
-        }
-        first = false;
-
-        uint64 last_address_of_unhooked;
-        // If the next mmap entry is away from the current VMA.
-        if (mmap_iter == MemoryRegionMap::EndRegionLocked() ||
-            mmap_iter->start_addr > vma_last_addr) {
-          last_address_of_unhooked = vma_last_addr;
-        } else {
-          last_address_of_unhooked = mmap_iter->start_addr - 1;
-        }
-
-        if (last_address_of_unhooked + 1 > cursor) {
-          RAW_CHECK(cursor >= vma_start_addr,
-                    "Wrong calculation for unhooked");
-          RAW_CHECK(last_address_of_unhooked <= vma_last_addr,
-                    "Wrong calculation for unhooked");
-          uint64 committed_size = unhooked_[type].Record(
-              memory_residence_info_getter,
-              cursor,
-              last_address_of_unhooked,
-              mmap_dump_buffer);
-          vma_subtotal += committed_size;
-          if (mmap_dump_buffer) {
-            mmap_dump_buffer->AppendString("  ", 0);
-            mmap_dump_buffer->AppendPtr(cursor, 0);
-            mmap_dump_buffer->AppendString(" - ", 0);
-            mmap_dump_buffer->AppendPtr(last_address_of_unhooked + 1, 0);
-            mmap_dump_buffer->AppendString("  unhooked ", 0);
-            mmap_dump_buffer->AppendInt64(committed_size, 0);
-            mmap_dump_buffer->AppendString(" / ", 0);
-            mmap_dump_buffer->AppendInt64(
-                last_address_of_unhooked - cursor + 1, 0);
-            mmap_dump_buffer->AppendString("\n", 0);
-          }
-          cursor = last_address_of_unhooked + 1;
-        }
-
-        if (mmap_iter != MemoryRegionMap::EndRegionLocked() &&
-            mmap_iter->start_addr <= vma_last_addr &&
-            mmap_dump_buffer) {
-          bool trailing = mmap_iter->start_addr < vma_start_addr;
-          bool continued = mmap_iter->end_addr - 1 > vma_last_addr;
-          uint64 partial_first_address, partial_last_address;
-          if (trailing)
-            partial_first_address = vma_start_addr;
-          else
-            partial_first_address = mmap_iter->start_addr;
-          if (continued)
-            partial_last_address = vma_last_addr;
-          else
-            partial_last_address = mmap_iter->end_addr - 1;
-          uint64 committed_size = 0;
-          if (memory_residence_info_getter)
-            committed_size = memory_residence_info_getter->CommittedSize(
-                partial_first_address, partial_last_address, mmap_dump_buffer);
-          vma_subtotal += committed_size;
-          mmap_dump_buffer->AppendString(trailing ? " (" : "  ", 0);
-          mmap_dump_buffer->AppendPtr(mmap_iter->start_addr, 0);
-          mmap_dump_buffer->AppendString(trailing ? ")" : " ", 0);
-          mmap_dump_buffer->AppendString("-", 0);
-          mmap_dump_buffer->AppendString(continued ? "(" : " ", 0);
-          mmap_dump_buffer->AppendPtr(mmap_iter->end_addr, 0);
-          mmap_dump_buffer->AppendString(continued ? ")" : " ", 0);
-          mmap_dump_buffer->AppendString(" hooked ", 0);
-          mmap_dump_buffer->AppendInt64(committed_size, 0);
-          mmap_dump_buffer->AppendString(" / ", 0);
-          mmap_dump_buffer->AppendInt64(
-              partial_last_address - partial_first_address + 1, 0);
-          mmap_dump_buffer->AppendString(" @ ", 0);
-          if (deep_bucket != NULL) {
-            mmap_dump_buffer->AppendInt(deep_bucket->id, 0, false);
-          } else {
-            mmap_dump_buffer->AppendInt(0, 0, false);
-          }
-          mmap_dump_buffer->AppendString("\n", 0);
-        }
-      } while (mmap_iter != MemoryRegionMap::EndRegionLocked() &&
-               mmap_iter->end_addr - 1 <= vma_last_addr);
-    }
-
-    if (vma_total != vma_subtotal) {
-      char buffer[1024];
-      int written = procmaps_iter.FormatLine(buffer, sizeof(buffer),
-                                             vma_start_addr, vma_last_addr,
-                                             flags, offset, inode, filename, 0);
-      RAW_VLOG(0, "[%d] Mismatched total in VMA %" PRId64 ":"
-              "%" PRId64 " (%" PRId64 ")",
-              getpid(), vma_total, vma_subtotal, vma_total - vma_subtotal);
-      RAW_VLOG(0, "[%d]   in %s", getpid(), buffer);
-    }
-  }
-
-  // TODO(dmikurube): Investigate and fix http://crbug.com/189114.
-  //
-  // The total committed memory usage in all_ (from /proc/<pid>/maps) is
-  // sometimes smaller than the sum of the committed mmap'ed addresses and
-  // unhooked regions.  Within our observation, the difference was only 4KB
-  // in committed usage, zero in reserved virtual addresses
-  //
-  // A guess is that an uncommitted (but reserved) page may become committed
-  // during counting memory usage in the loop above.
-  //
-  // The difference is accounted as "ABSENT" to investigate such cases.
-  //
-  // It will be fixed when http://crbug.com/245603 finishes (no double count).
-
-  RegionStats all_total;
-  RegionStats unhooked_total;
-  for (int i = 0; i < NUMBER_OF_MAPS_REGION_TYPES; ++i) {
-    all_total.AddAnotherRegionStat(all_[i]);
-    unhooked_total.AddAnotherRegionStat(unhooked_[i]);
-  }
-
-  size_t absent_virtual = profiled_mmap_.virtual_bytes() +
-                          unhooked_total.virtual_bytes() -
-                          all_total.virtual_bytes();
-  if (absent_virtual > 0)
-    all_[ABSENT].AddToVirtualBytes(absent_virtual);
-
-  size_t absent_committed = profiled_mmap_.committed_bytes() +
-                            unhooked_total.committed_bytes() -
-                            all_total.committed_bytes();
-  if (absent_committed > 0)
-    all_[ABSENT].AddToCommittedBytes(absent_committed);
-}
-
-void DeepHeapProfile::GlobalStats::SnapshotAllocations(
-    DeepHeapProfile* deep_profile) {
-  profiled_malloc_.Initialize();
-
-  deep_profile->heap_profile_->address_map_->Iterate(RecordAlloc, deep_profile);
-}
-
-void DeepHeapProfile::GlobalStats::Unparse(TextBuffer* buffer) {
-  RegionStats all_total;
-  RegionStats unhooked_total;
-  for (int i = 0; i < NUMBER_OF_MAPS_REGION_TYPES; ++i) {
-    all_total.AddAnotherRegionStat(all_[i]);
-    unhooked_total.AddAnotherRegionStat(unhooked_[i]);
-  }
-
-  // "# total (%lu) %c= profiled-mmap (%lu) + nonprofiled-* (%lu)\n"
-  buffer->AppendString("# total (", 0);
-  buffer->AppendUnsignedLong(all_total.committed_bytes(), 0);
-  buffer->AppendString(") ", 0);
-  buffer->AppendChar(all_total.committed_bytes() ==
-                     profiled_mmap_.committed_bytes() +
-                     unhooked_total.committed_bytes() ? '=' : '!');
-  buffer->AppendString("= profiled-mmap (", 0);
-  buffer->AppendUnsignedLong(profiled_mmap_.committed_bytes(), 0);
-  buffer->AppendString(") + nonprofiled-* (", 0);
-  buffer->AppendUnsignedLong(unhooked_total.committed_bytes(), 0);
-  buffer->AppendString(")\n", 0);
-
-  // "                               virtual    committed"
-  buffer->AppendString("", 26);
-  buffer->AppendString(kVirtualLabel, 12);
-  buffer->AppendChar(' ');
-  buffer->AppendString(kCommittedLabel, 12);
-  buffer->AppendString("\n", 0);
-
-  all_total.Unparse("total", buffer);
-  all_[ABSENT].Unparse("absent", buffer);
-  all_[FILE_EXEC].Unparse("file-exec", buffer);
-  all_[FILE_NONEXEC].Unparse("file-nonexec", buffer);
-  all_[ANONYMOUS].Unparse("anonymous", buffer);
-  all_[STACK].Unparse("stack", buffer);
-  all_[OTHER].Unparse("other", buffer);
-  unhooked_total.Unparse("nonprofiled-total", buffer);
-  unhooked_[ABSENT].Unparse("nonprofiled-absent", buffer);
-  unhooked_[ANONYMOUS].Unparse("nonprofiled-anonymous", buffer);
-  unhooked_[FILE_EXEC].Unparse("nonprofiled-file-exec", buffer);
-  unhooked_[FILE_NONEXEC].Unparse("nonprofiled-file-nonexec", buffer);
-  unhooked_[STACK].Unparse("nonprofiled-stack", buffer);
-  unhooked_[OTHER].Unparse("nonprofiled-other", buffer);
-  profiled_mmap_.Unparse("profiled-mmap", buffer);
-  profiled_malloc_.Unparse("profiled-malloc", buffer);
-}
-
-// static
-void DeepHeapProfile::GlobalStats::RecordAlloc(const void* pointer,
-                                               AllocValue* alloc_value,
-                                               DeepHeapProfile* deep_profile) {
-  uint64 address = reinterpret_cast<uintptr_t>(pointer);
-  size_t committed = deep_profile->memory_residence_info_getter_->CommittedSize(
-      address, address + alloc_value->bytes - 1, NULL);
-
-  DeepBucket* deep_bucket = deep_profile->deep_table_.Lookup(
-      alloc_value->bucket(),
-#if defined(TYPE_PROFILING)
-      LookupType(pointer),
-#endif
-      /* is_mmap */ false);
-  deep_bucket->committed_size += committed;
-  deep_profile->stats_.profiled_malloc_.AddToVirtualBytes(alloc_value->bytes);
-  deep_profile->stats_.profiled_malloc_.AddToCommittedBytes(committed);
-}
-
-DeepHeapProfile::DeepBucket*
-    DeepHeapProfile::GlobalStats::GetInformationOfMemoryRegion(
-        const MemoryRegionMap::RegionIterator& mmap_iter,
-        const MemoryResidenceInfoGetterInterface* memory_residence_info_getter,
-        DeepHeapProfile* deep_profile) {
-  size_t committed = deep_profile->memory_residence_info_getter_->
-      CommittedSize(mmap_iter->start_addr, mmap_iter->end_addr - 1, NULL);
-
-  // TODO(dmikurube): Store a reference to the bucket in region.
-  Bucket* bucket = MemoryRegionMap::GetBucket(
-      mmap_iter->call_stack_depth, mmap_iter->call_stack);
-  DeepBucket* deep_bucket = NULL;
-  if (bucket != NULL) {
-    deep_bucket = deep_profile->deep_table_.Lookup(
-        bucket,
-#if defined(TYPE_PROFILING)
-        NULL,  // No type information for memory regions by mmap.
-#endif
-        /* is_mmap */ true);
-    if (deep_bucket != NULL)
-      deep_bucket->committed_size += committed;
-  }
-
-  profiled_mmap_.AddToVirtualBytes(
-      mmap_iter->end_addr - mmap_iter->start_addr);
-  profiled_mmap_.AddToCommittedBytes(committed);
-
-  return deep_bucket;
-}
-
-// static
-void DeepHeapProfile::WriteProcMaps(const char* prefix,
-                                    char raw_buffer[],
-                                    int buffer_size) {
-  char filename[100];
-  snprintf(filename, sizeof(filename),
-           "%s.%05d.maps", prefix, static_cast<int>(getpid()));
-
-  RawFD fd = RawOpenForWriting(filename);
-  RAW_DCHECK(fd != kIllegalRawFD, "");
-
-  int length;
-  bool wrote_all;
-  length = tcmalloc::FillProcSelfMaps(raw_buffer, buffer_size, &wrote_all);
-  RAW_DCHECK(wrote_all, "");
-  RAW_DCHECK(length <= buffer_size, "");
-  RawWrite(fd, raw_buffer, length);
-  RawClose(fd);
-}
-#else  // USE_DEEP_HEAP_PROFILE
-
-DeepHeapProfile::DeepHeapProfile(HeapProfileTable* heap_profile,
-                                 const char* prefix,
-                                 enum PageFrameType pageframe_type)
-    : heap_profile_(heap_profile) {
-}
-
-DeepHeapProfile::~DeepHeapProfile() {
-}
-
-void DeepHeapProfile::DumpOrderedProfile(const char* reason,
-                                         char raw_buffer[],
-                                         int buffer_size,
-                                         RawFD fd) {
-}
-
-#endif  // USE_DEEP_HEAP_PROFILE
diff --git a/third_party/tcmalloc/chromium/src/deep-heap-profile.h b/third_party/tcmalloc/chromium/src/deep-heap-profile.h
deleted file mode 100644
index 0544b31..0000000
--- a/third_party/tcmalloc/chromium/src/deep-heap-profile.h
+++ /dev/null
@@ -1,407 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// ---
-// Author: Sainbayar Sukhbaatar
-//         Dai Mikurube
-//
-// This file contains a class DeepHeapProfile and its public function
-// DeepHeapProfile::DumpOrderedProfile().  The function works like
-// HeapProfileTable::FillOrderedProfile(), but dumps directory to files.
-//
-// DeepHeapProfile::DumpOrderedProfile() dumps more detailed information about
-// heap usage, which includes OS-level information such as memory residency and
-// type information if the type profiler is available.
-//
-// DeepHeapProfile::DumpOrderedProfile() uses data stored in HeapProfileTable.
-// Any code in DeepHeapProfile runs only when DumpOrderedProfile() is called.
-// It has overhead in dumping, but no overhead in logging.
-//
-// It currently works only on Linux including Android.  It does nothing in
-// non-Linux environments.
-
-// Note that uint64 is used to represent addresses instead of uintptr_t, and
-// int is used to represent buffer sizes instead of size_t.
-// It's for consistency with other TCMalloc functions.  ProcMapsIterator uses
-// uint64 for addresses, and HeapProfileTable::DumpOrderedProfile uses int
-// for buffer sizes.
-
-#ifndef BASE_DEEP_HEAP_PROFILE_H_
-#define BASE_DEEP_HEAP_PROFILE_H_
-
-#include "config.h"
-
-#if defined(TYPE_PROFILING)
-#include <typeinfo>
-#endif
-
-#if defined(__linux__) || defined(_WIN32) || defined(_WIN64)
-#define USE_DEEP_HEAP_PROFILE 1
-#endif
-
-#include "addressmap-inl.h"
-#include "heap-profile-table.h"
-#include "memory_region_map.h"
-
-class DeepHeapProfile {
- public:
-  enum PageFrameType {
-    DUMP_NO_PAGEFRAME = 0,  // Dumps nothing about pageframes
-    DUMP_PFN = 1,           // Dumps only pageframe numbers (PFNs)
-    DUMP_PAGECOUNT = 2,     // Dumps PFNs and pagecounts
-  };
-
-  // Constructs a DeepHeapProfile instance.  It works as a wrapper of
-  // HeapProfileTable.
-  //
-  // |heap_profile| is a pointer to HeapProfileTable.  DeepHeapProfile reads
-  // data in |heap_profile| and forwards operations to |heap_profile| if
-  // DeepHeapProfile is not available (non-Linux).
-  // |prefix| is a prefix of dumped file names.
-  // |pageframe_type| means what information is dumped for pageframes.
-  DeepHeapProfile(HeapProfileTable* heap_profile,
-                  const char* prefix,
-                  enum PageFrameType pageframe_type);
-  ~DeepHeapProfile();
-
-  // Dumps a deep profile into |fd| with using |raw_buffer| of |buffer_size|.
-  //
-  // In addition, a list of buckets is dumped into a ".buckets" file in
-  // descending order of allocated bytes.
-  void DumpOrderedProfile(const char* reason,
-                          char raw_buffer[],
-                          int buffer_size,
-                          RawFD fd);
-
- private:
-#ifdef USE_DEEP_HEAP_PROFILE
-  typedef HeapProfileTable::Stats Stats;
-  typedef HeapProfileTable::Bucket Bucket;
-  typedef HeapProfileTable::AllocValue AllocValue;
-  typedef HeapProfileTable::AllocationMap AllocationMap;
-
-  enum MapsRegionType {
-    // Bytes of memory which were not recognized with /proc/<pid>/maps.
-    // This size should be 0.
-    ABSENT,
-
-    // Bytes of memory which is mapped anonymously.
-    // Regions which contain nothing in the last column of /proc/<pid>/maps.
-    ANONYMOUS,
-
-    // Bytes of memory which is mapped to a executable/non-executable file.
-    // Regions which contain file paths in the last column of /proc/<pid>/maps.
-    FILE_EXEC,
-    FILE_NONEXEC,
-
-    // Bytes of memory which is labeled [stack] in /proc/<pid>/maps.
-    STACK,
-
-    // Bytes of memory which is labeled, but not mapped to any file.
-    // Regions which contain non-path strings in the last column of
-    // /proc/<pid>/maps.
-    OTHER,
-
-    NUMBER_OF_MAPS_REGION_TYPES
-  };
-
-  static const char* kMapsRegionTypeDict[NUMBER_OF_MAPS_REGION_TYPES];
-
-  // Manages a buffer to keep a text to be dumped to a file.
-  class TextBuffer {
-   public:
-    TextBuffer(char *raw_buffer, int size, RawFD fd)
-        : buffer_(raw_buffer),
-          size_(size),
-          cursor_(0),
-          fd_(fd) {
-    }
-
-    int Size();
-    int FilledBytes();
-    void Clear();
-    void Flush();
-
-    bool AppendChar(char value);
-    bool AppendString(const char* value, int width);
-    bool AppendInt(int value, int width, bool leading_zero);
-    bool AppendLong(long value, int width);
-    bool AppendUnsignedLong(unsigned long value, int width);
-    bool AppendInt64(int64 value, int width);
-    bool AppendBase64(uint64 value, int width);
-    bool AppendPtr(uint64 value, int width);
-
-   private:
-    bool ForwardCursor(int appended);
-
-    char *buffer_;
-    int size_;
-    int cursor_;
-    RawFD fd_;
-    DISALLOW_COPY_AND_ASSIGN(TextBuffer);
-  };
-
-  // Defines an interface for getting info about memory residence.
-  class MemoryResidenceInfoGetterInterface {
-   public:
-    virtual ~MemoryResidenceInfoGetterInterface();
-
-    // Initializes the instance.
-    virtual void Initialize() = 0;
-
-    // Returns the number of resident (including swapped) bytes of the given
-    // memory region from |first_address| to |last_address| inclusive.
-    virtual size_t CommittedSize(uint64 first_address,
-                                 uint64 last_address,
-                                 TextBuffer* buffer) const = 0;
-
-    // Creates a new platform specific MemoryResidenceInfoGetterInterface.
-    static MemoryResidenceInfoGetterInterface* Create(
-        PageFrameType pageframe_type);
-
-    virtual bool IsPageCountAvailable() const = 0;
-
-   protected:
-    MemoryResidenceInfoGetterInterface();
-  };
-
-#if defined(_WIN32) || defined(_WIN64)
-  // TODO(peria): Implement this class.
-  class MemoryInfoGetterWindows : public MemoryResidenceInfoGetterInterface {
-   public:
-    MemoryInfoGetterWindows(PageFrameType) {}
-    virtual ~MemoryInfoGetterWindows() {}
-
-    virtual void Initialize();
-
-    virtual size_t CommittedSize(uint64 first_address,
-                                 uint64 last_address,
-                                 TextBuffer* buffer) const;
-
-    virtual bool IsPageCountAvailable() const;
-  };
-#endif  // defined(_WIN32) || defined(_WIN64)
-
-#if defined(__linux__)
-  // Implements MemoryResidenceInfoGetterInterface for Linux.
-  class MemoryInfoGetterLinux : public MemoryResidenceInfoGetterInterface {
-   public:
-    MemoryInfoGetterLinux(PageFrameType pageframe_type)
-        : pageframe_type_(pageframe_type),
-          pagemap_fd_(kIllegalRawFD),
-          kpagecount_fd_(kIllegalRawFD) {}
-    virtual ~MemoryInfoGetterLinux() {}
-
-    // Opens /proc/<pid>/pagemap and stores its file descriptor.
-    // It keeps open while the process is running.
-    //
-    // Note that file descriptors need to be refreshed after fork.
-    virtual void Initialize();
-
-    // Returns the number of resident (including swapped) bytes of the given
-    // memory region from |first_address| to |last_address| inclusive.
-    virtual size_t CommittedSize(uint64 first_address,
-                                 uint64 last_address,
-                                 TextBuffer* buffer) const;
-
-    virtual bool IsPageCountAvailable() const;
-
-   private:
-    struct State {
-      uint64 pfn;
-      bool is_committed;  // Currently, we use only this
-      bool is_present;
-      bool is_swapped;
-      bool is_shared;
-      bool is_mmap;
-    };
-
-    uint64 ReadPageCount(uint64 pfn) const;
-
-    // Seeks to the offset of the open pagemap file.
-    // It returns true if succeeded.
-    bool Seek(uint64 address) const;
-
-    // Reads a pagemap state from the current offset.
-    // It returns true if succeeded.
-    bool Read(State* state, bool get_pfn) const;
-
-    PageFrameType pageframe_type_;
-    RawFD pagemap_fd_;
-    RawFD kpagecount_fd_;
-  };
-#endif  // defined(__linux__)
-
-  // Contains extended information for HeapProfileTable::Bucket.  These objects
-  // are managed in a hash table (DeepBucketTable) whose key is an address of
-  // a Bucket and other additional information.
-  struct DeepBucket {
-   public:
-    void UnparseForStats(TextBuffer* buffer);
-    void UnparseForBucketFile(TextBuffer* buffer);
-
-    Bucket* bucket;
-#if defined(TYPE_PROFILING)
-    const std::type_info* type;  // A type of the object
-#endif
-    size_t committed_size;  // A resident size of this bucket
-    bool is_mmap;  // True if the bucket represents a mmap region
-    int id;  // A unique ID of the bucket
-    bool is_logged;  // True if the stracktrace is logged to a file
-    DeepBucket* next;  // A reference to the next entry in the hash table
-  };
-
-  // Manages a hash table for DeepBucket.
-  class DeepBucketTable {
-   public:
-    DeepBucketTable(int size,
-                    HeapProfileTable::Allocator alloc,
-                    HeapProfileTable::DeAllocator dealloc);
-    ~DeepBucketTable();
-
-    // Finds a DeepBucket instance corresponding to the given |bucket|, or
-    // creates a new DeepBucket object if it doesn't exist.
-    DeepBucket* Lookup(Bucket* bucket,
-#if defined(TYPE_PROFILING)
-                       const std::type_info* type,
-#endif
-                       bool is_mmap);
-
-    // Writes stats of the hash table to |buffer| for DumpOrderedProfile.
-    void UnparseForStats(TextBuffer* buffer);
-
-    // Writes all buckets for a bucket file with using |buffer|.
-    void WriteForBucketFile(const char* prefix,
-                            int dump_count,
-                            char raw_buffer[],
-                            int buffer_size);
-
-    // Resets 'committed_size' members in DeepBucket objects.
-    void ResetCommittedSize();
-
-    // Resets all 'is_loggeed' flags in DeepBucket objects.
-    void ResetIsLogged();
-
-   private:
-    // Adds |add| to a |hash_value| for Lookup.
-    inline static void AddToHashValue(uintptr_t add, uintptr_t* hash_value);
-    inline static void FinishHashValue(uintptr_t* hash_value);
-
-    DeepBucket** table_;
-    size_t table_size_;
-    HeapProfileTable::Allocator alloc_;
-    HeapProfileTable::DeAllocator dealloc_;
-    int bucket_id_;
-  };
-
-  class RegionStats {
-   public:
-    RegionStats(): virtual_bytes_(0), committed_bytes_(0) {}
-    ~RegionStats() {}
-
-    // Initializes 'virtual_bytes_' and 'committed_bytes_'.
-    void Initialize();
-
-    // Updates itself to contain the tallies of 'virtual_bytes' and
-    // 'committed_bytes' in the region from |first_adress| to |last_address|
-    // inclusive.
-    uint64 Record(
-        const MemoryResidenceInfoGetterInterface* memory_residence_info_getter,
-        uint64 first_address,
-        uint64 last_address,
-        TextBuffer* buffer);
-
-    // Writes stats of the region into |buffer| with |name|.
-    void Unparse(const char* name, TextBuffer* buffer);
-
-    size_t virtual_bytes() const { return virtual_bytes_; }
-    size_t committed_bytes() const { return committed_bytes_; }
-    void AddToVirtualBytes(size_t additional_virtual_bytes) {
-      virtual_bytes_ += additional_virtual_bytes;
-    }
-    void AddToCommittedBytes(size_t additional_committed_bytes) {
-      committed_bytes_ += additional_committed_bytes;
-    }
-    void AddAnotherRegionStat(const RegionStats& other) {
-      virtual_bytes_ += other.virtual_bytes_;
-      committed_bytes_ += other.committed_bytes_;
-    }
-
-   private:
-    size_t virtual_bytes_;
-    size_t committed_bytes_;
-    DISALLOW_COPY_AND_ASSIGN(RegionStats);
-  };
-
-  class GlobalStats {
-   public:
-    // Snapshots and calculates global stats from /proc/<pid>/maps and pagemap.
-    void SnapshotMaps(
-        const MemoryResidenceInfoGetterInterface* memory_residence_info_getter,
-        DeepHeapProfile* deep_profile,
-        TextBuffer* mmap_dump_buffer);
-
-    // Snapshots allocations by malloc and mmap.
-    void SnapshotAllocations(DeepHeapProfile* deep_profile);
-
-    // Writes global stats into |buffer|.
-    void Unparse(TextBuffer* buffer);
-
-  private:
-    // Records both virtual and committed byte counts of malloc and mmap regions
-    // as callback functions for AllocationMap::Iterate().
-    static void RecordAlloc(const void* pointer,
-                            AllocValue* alloc_value,
-                            DeepHeapProfile* deep_profile);
-
-    DeepBucket* GetInformationOfMemoryRegion(
-        const MemoryRegionMap::RegionIterator& mmap_iter,
-        const MemoryResidenceInfoGetterInterface* memory_residence_info_getter,
-        DeepHeapProfile* deep_profile);
-
-    // All RegionStats members in this class contain the bytes of virtual
-    // memory and committed memory.
-    // TODO(dmikurube): These regions should be classified more precisely later
-    // for more detailed analysis.
-    RegionStats all_[NUMBER_OF_MAPS_REGION_TYPES];
-
-    RegionStats unhooked_[NUMBER_OF_MAPS_REGION_TYPES];
-
-    // Total bytes of malloc'ed regions.
-    RegionStats profiled_malloc_;
-
-    // Total bytes of mmap'ed regions.
-    RegionStats profiled_mmap_;
-  };
-
-  // Writes reformatted /proc/<pid>/maps into a file "|prefix|.<pid>.maps"
-  // with using |raw_buffer| of |buffer_size|.
-  static void WriteProcMaps(const char* prefix,
-                            char raw_buffer[],
-                            int buffer_size);
-
-  // Appends the command line (/proc/pid/cmdline on Linux) into |buffer|.
-  bool AppendCommandLine(TextBuffer* buffer);
-
-  MemoryResidenceInfoGetterInterface* memory_residence_info_getter_;
-
-  // Process ID of the last dump.  This can change by fork.
-  pid_t most_recent_pid_;
-
-  GlobalStats stats_;      // Stats about total memory.
-  int dump_count_;         // The number of dumps.
-  char* filename_prefix_;  // Output file prefix.
-  char run_id_[128];
-
-  DeepBucketTable deep_table_;
-
-  enum PageFrameType pageframe_type_;
-#endif  // USE_DEEP_HEAP_PROFILE
-
-  HeapProfileTable* heap_profile_;
-
-  DISALLOW_COPY_AND_ASSIGN(DeepHeapProfile);
-};
-
-#endif  // BASE_DEEP_HEAP_PROFILE_H_
diff --git a/third_party/tcmalloc/chromium/src/gperftools/type_profiler_map.h b/third_party/tcmalloc/chromium/src/gperftools/type_profiler_map.h
deleted file mode 100644
index 1236258..0000000
--- a/third_party/tcmalloc/chromium/src/gperftools/type_profiler_map.h
+++ /dev/null
@@ -1,20 +0,0 @@
-// Copyright 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef TYPE_PROFILER_MAP_H_
-#define TYPE_PROFILER_MAP_H_
-
-#if defined(TYPE_PROFILING)
-
-#include <typeinfo>
-
-// PERFTOOLS_DLL_DECL is unnecessary, as it is Windows specific.
-
-void InsertType(void* address, size_t size, const std::type_info& type);
-void EraseType(void* address);
-const std::type_info* LookupType(const void* address);
-
-#endif  // defined(TYPE_PROFILING)
-
-#endif  // TYPE_PROFILER_MAP_H_
diff --git a/third_party/tcmalloc/chromium/src/heap-profile-table.cc b/third_party/tcmalloc/chromium/src/heap-profile-table.cc
index d880e56..cb96d91 100644
--- a/third_party/tcmalloc/chromium/src/heap-profile-table.cc
+++ b/third_party/tcmalloc/chromium/src/heap-profile-table.cc
@@ -92,9 +92,6 @@
 // header of the dumped heap profile
 static const char kProfileHeader[] = "heap profile: ";
 static const char kProcSelfMapsHeader[] = "\nMAPPED_LIBRARIES:\n";
-#if defined(TYPE_PROFILING)
-static const char kTypeProfileStatsHeader[] = "type statistics:\n";
-#endif  // defined(TYPE_PROFILING)
 
 //----------------------------------------------------------------------
 
@@ -361,29 +358,6 @@
   RawClose(fd);
 }
 
-#if defined(TYPE_PROFILING)
-void HeapProfileTable::DumpTypeStatistics(const char* file_name) const {
-  RawFD fd = RawOpenForWriting(file_name);
-  if (fd == kIllegalRawFD) {
-    RAW_LOG(ERROR, "Failed dumping type statistics to %s", file_name);
-    return;
-  }
-
-  AddressMap<TypeCount>* type_size_map;
-  type_size_map = new(alloc_(sizeof(AddressMap<TypeCount>)))
-      AddressMap<TypeCount>(alloc_, dealloc_);
-  address_map_->Iterate(TallyTypesItererator, type_size_map);
-
-  RawWrite(fd, kTypeProfileStatsHeader, strlen(kTypeProfileStatsHeader));
-  const DumpArgs args(fd, NULL);
-  type_size_map->Iterate<const DumpArgs&>(DumpTypesIterator, args);
-  RawClose(fd);
-
-  type_size_map->~AddressMap<TypeCount>();
-  dealloc_(type_size_map);
-}
-#endif  // defined(TYPE_PROFILING)
-
 void HeapProfileTable::IterateOrderedAllocContexts(
     AllocContextIterator callback) const {
   Bucket** list = MakeSortedBucketList();
@@ -451,41 +425,6 @@
                                "", NULL);
 }
 
-#if defined(TYPE_PROFILING)
-// static
-void HeapProfileTable::TallyTypesItererator(
-    const void* ptr,
-    AllocValue* value,
-    AddressMap<TypeCount>* type_size_map) {
-  const std::type_info* type = LookupType(ptr);
-
-  const void* key = NULL;
-  if (type)
-    key = type->name();
-
-  TypeCount* count = type_size_map->FindMutable(key);
-  if (count) {
-    count->bytes += value->bytes;
-    ++count->objects;
-  } else {
-    type_size_map->Insert(key, TypeCount(value->bytes, 1));
-  }
-}
-
-// static
-void HeapProfileTable::DumpTypesIterator(const void* ptr,
-                                         TypeCount* count,
-                                         const DumpArgs& args) {
-  char buf[1024];
-  int len;
-  const char* mangled_type_name = static_cast<const char*>(ptr);
-  len = snprintf(buf, sizeof(buf), "%6d: %8" PRId64 " @ %s\n",
-                 count->objects, count->bytes,
-                 mangled_type_name ? mangled_type_name : "(no_typeinfo)");
-  RawWrite(args.fd, buf, len);
-}
-#endif  // defined(TYPE_PROFILING)
-
 inline
 void HeapProfileTable::DumpNonLiveIterator(const void* ptr, AllocValue* v,
                                            const DumpArgs& args) {
diff --git a/third_party/tcmalloc/chromium/src/heap-profile-table.h b/third_party/tcmalloc/chromium/src/heap-profile-table.h
index c2ad39f..b0c3695 100644
--- a/third_party/tcmalloc/chromium/src/heap-profile-table.h
+++ b/third_party/tcmalloc/chromium/src/heap-profile-table.h
@@ -40,10 +40,6 @@
 #include "base/logging.h"   // for RawFD
 #include "heap-profile-stats.h"
 
-#if defined(TYPE_PROFILING)
-#include <gperftools/type_profiler_map.h>
-#endif  // defined(TYPE_PROFILING)
-
 // Table to maintain a heap profile data inside,
 // i.e. the set of currently active heap memory allocations.
 // thread-unsafe and non-reentrant code:
@@ -223,13 +219,7 @@
   // used for leak checking (using HeapLeakChecker).
   void DumpMarkedObjects(AllocationMark mark, const char* file_name);
 
-#if defined(TYPE_PROFILING)
-  void DumpTypeStatistics(const char* file_name) const;
-#endif  // defined(TYPE_PROFILING)
-
  private:
-  friend class DeepHeapProfile;
-
   // data types ----------------------------
 
   // Hash table bucket to hold (de)allocation stats
@@ -328,18 +318,6 @@
                     // mark unmarked allocations.
   };
 
-#if defined(TYPE_PROFILING)
-  struct TypeCount {
-    TypeCount(size_t bytes_arg, unsigned int objects_arg)
-        : bytes(bytes_arg),
-          objects(objects_arg) {
-    }
-
-    size_t bytes;
-    unsigned int objects;
-  };
-#endif  // defined(TYPE_PROFILING)
-
   struct AllocationAddressIteratorArgs {
     AllocationAddressIteratorArgs(AddressIterator callback_arg, void* data_arg)
         : callback(callback_arg),
@@ -409,16 +387,6 @@
   inline static void DumpMarkedIterator(const void* ptr, AllocValue* v,
                                         const DumpMarkedArgs& args);
 
-#if defined(TYPE_PROFILING)
-  inline static void TallyTypesItererator(const void* ptr,
-                                          AllocValue* value,
-                                          AddressMap<TypeCount>* type_size_map);
-
-  inline static void DumpTypesIterator(const void* ptr,
-                                       TypeCount* size,
-                                       const DumpArgs& args);
-#endif  // defined(TYPE_PROFILING)
-
   // Helper for IterateOrderedAllocContexts and FillOrderedProfile.
   // Creates a sorted list of Buckets whose length is num_buckets_.
   // The caller is responsible for deallocating the returned list.
diff --git a/third_party/tcmalloc/chromium/src/heap-profiler.cc b/third_party/tcmalloc/chromium/src/heap-profiler.cc
index 46a81a4..a49f63d 100644
--- a/third_party/tcmalloc/chromium/src/heap-profiler.cc
+++ b/third_party/tcmalloc/chromium/src/heap-profiler.cc
@@ -68,7 +68,6 @@
 #include "base/spinlock.h"
 #include "base/low_level_alloc.h"
 #include "base/sysinfo.h"      // for GetUniquePathFromEnv()
-#include "deep-heap-profile.h"
 #include "heap-profile-table.h"
 #include "memory_region_map.h"
 
@@ -81,38 +80,6 @@
 #endif
 #endif
 
-#if defined(__ANDROID__) || defined(ANDROID)
-// On android, there are no environment variables.
-// Instead, we use system properties, set via:
-//   adb shell setprop prop_name prop_value
-// From <sys/system_properties.h>,
-//   PROP_NAME_MAX   32
-//   PROP_VALUE_MAX  92
-#define HEAPPROFILE "heapprof"
-#define HEAP_PROFILE_ALLOCATION_INTERVAL "heapprof.allocation_interval"
-#define HEAP_PROFILE_DEALLOCATION_INTERVAL "heapprof.deallocation_interval"
-#define HEAP_PROFILE_INUSE_INTERVAL "heapprof.inuse_interval"
-#define HEAP_PROFILE_TIME_INTERVAL "heapprof.time_interval"
-#define HEAP_PROFILE_MMAP_LOG "heapprof.mmap_log"
-#define HEAP_PROFILE_MMAP "heapprof.mmap"
-#define HEAP_PROFILE_ONLY_MMAP "heapprof.only_mmap"
-#define DEEP_HEAP_PROFILE "heapprof.deep_heap_profile"
-#define DEEP_HEAP_PROFILE_PAGEFRAME "heapprof.deep.pageframe"
-#define HEAP_PROFILE_TYPE_STATISTICS "heapprof.type_statistics"
-#else  // defined(__ANDROID__) || defined(ANDROID)
-#define HEAPPROFILE "HEAPPROFILE"
-#define HEAP_PROFILE_ALLOCATION_INTERVAL "HEAP_PROFILE_ALLOCATION_INTERVAL"
-#define HEAP_PROFILE_DEALLOCATION_INTERVAL "HEAP_PROFILE_DEALLOCATION_INTERVAL"
-#define HEAP_PROFILE_INUSE_INTERVAL "HEAP_PROFILE_INUSE_INTERVAL"
-#define HEAP_PROFILE_TIME_INTERVAL "HEAP_PROFILE_TIME_INTERVAL"
-#define HEAP_PROFILE_MMAP_LOG "HEAP_PROFILE_MMAP_LOG"
-#define HEAP_PROFILE_MMAP "HEAP_PROFILE_MMAP"
-#define HEAP_PROFILE_ONLY_MMAP "HEAP_PROFILE_ONLY_MMAP"
-#define DEEP_HEAP_PROFILE "DEEP_HEAP_PROFILE"
-#define DEEP_HEAP_PROFILE_PAGEFRAME "DEEP_HEAP_PROFILE_PAGEFRAME"
-#define HEAP_PROFILE_TYPE_STATISTICS "HEAP_PROFILE_TYPE_STATISTICS"
-#endif  // defined(__ANDROID__) || defined(ANDROID)
-
 using STL_NAMESPACE::string;
 using STL_NAMESPACE::sort;
 
@@ -154,20 +121,6 @@
             EnvToBool(HEAP_PROFILE_ONLY_MMAP, false),
             "If heap-profiling is on, only profile mmap, mremap, and sbrk; "
             "do not profile malloc/new/etc");
-DEFINE_bool(deep_heap_profile,
-            EnvToBool(DEEP_HEAP_PROFILE, false),
-            "If heap-profiling is on, profile deeper (Linux and Android)");
-DEFINE_int32(deep_heap_profile_pageframe,
-             EnvToInt(DEEP_HEAP_PROFILE_PAGEFRAME, 0),
-             "Needs deeper profile. If 1, dump page frame numbers (PFNs). "
-             "If 2, dump page counts (/proc/kpagecount) with PFNs.");
-#if defined(TYPE_PROFILING)
-DEFINE_bool(heap_profile_type_statistics,
-            EnvToBool(HEAP_PROFILE_TYPE_STATISTICS, false),
-            "If heap-profiling is on, dump type statistics.");
-#endif  // defined(TYPE_PROFILING)
-
-
 //----------------------------------------------------------------------
 // Locking
 //----------------------------------------------------------------------
@@ -220,7 +173,6 @@
 static int64 last_dump_time = 0;      // The time of the last dump
 
 static HeapProfileTable* heap_profile = NULL;  // the heap profile table
-static DeepHeapProfile* deep_profile = NULL;  // deep memory profiler
 
 // Callback to generate a stack trace for an allocation. May be overriden
 // by an application to provide its own pseudo-stacks.
@@ -301,25 +253,11 @@
         reinterpret_cast<char*>(ProfilerMalloc(kProfileBufferSize));
   }
 
-  if (deep_profile) {
-    deep_profile->DumpOrderedProfile(reason, global_profiler_buffer,
-                                     kProfileBufferSize, fd);
-  } else {
-    char* profile = DoGetHeapProfileLocked(global_profiler_buffer,
-                                           kProfileBufferSize);
-    RawWrite(fd, profile, strlen(profile));
-  }
+  char* profile =
+      DoGetHeapProfileLocked(global_profiler_buffer, kProfileBufferSize);
+  RawWrite(fd, profile, strlen(profile));
   RawClose(fd);
 
-#if defined(TYPE_PROFILING)
-  if (FLAGS_heap_profile_type_statistics) {
-    snprintf(file_name, sizeof(file_name), "%s.%05d.%04d.type",
-             filename_prefix, getpid(), dump_count);
-    RAW_VLOG(0, "Dumping type statistics to %s", file_name);
-    heap_profile->DumpTypeStatistics(file_name);
-  }
-#endif  // defined(TYPE_PROFILING)
-
   dumping = false;
 }
 
@@ -529,14 +467,6 @@
   high_water_mark = 0;
   last_dump_time = 0;
 
-  if (FLAGS_deep_heap_profile) {
-    // Initialize deep memory profiler
-    RAW_VLOG(0, "[%d] Starting a deep memory profiler", getpid());
-    deep_profile = new(ProfilerMalloc(sizeof(DeepHeapProfile)))
-        DeepHeapProfile(heap_profile, prefix, DeepHeapProfile::PageFrameType(
-            FLAGS_deep_heap_profile_pageframe));
-  }
-
   // We do not reset dump_count so if the user does a sequence of
   // HeapProfilerStart/HeapProfileStop, we will get a continuous
   // sequence of profiles.
@@ -598,13 +528,6 @@
     RAW_CHECK(MallocHook::RemoveMunmapHook(&MunmapHook), "");
   }
 
-  if (deep_profile) {
-    // free deep memory profiler
-    deep_profile->~DeepHeapProfile();
-    ProfilerFree(deep_profile);
-    deep_profile = NULL;
-  }
-
   // free profile
   heap_profile->~HeapProfileTable();
   ProfilerFree(heap_profile);
diff --git a/third_party/tcmalloc/chromium/src/type_profiler_map.cc b/third_party/tcmalloc/chromium/src/type_profiler_map.cc
deleted file mode 100644
index a2f21f8..0000000
--- a/third_party/tcmalloc/chromium/src/type_profiler_map.cc
+++ /dev/null
@@ -1,112 +0,0 @@
-// Copyright 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#if defined(TYPE_PROFILING)
-
-#include <config.h>
-
-#include <new>
-#include <stddef.h>
-#include <typeinfo>
-
-#include <gperftools/type_profiler_map.h>
-
-#include "addressmap-inl.h"
-#include "base/logging.h"
-#include "base/low_level_alloc.h"
-#include "base/spinlock.h"
-#include "tcmalloc_guard.h"
-
-namespace {
-
-const TCMallocGuard tcmalloc_initializer;
-
-//----------------------------------------------------------------------
-// A struct to store size and type_info of an object
-//----------------------------------------------------------------------
-
-struct ObjectInfo {
- public:
-  ObjectInfo(): size(0), type(NULL) {}
-  ObjectInfo(size_t size_arg, const std::type_info* type_arg)
-      : size(size_arg),
-        type(type_arg) {
-  }
-
-  size_t size;
-  const std::type_info* type;
-};
-
-//----------------------------------------------------------------------
-// Locking
-//----------------------------------------------------------------------
-
-SpinLock g_type_profiler_lock(SpinLock::LINKER_INITIALIZED);
-
-//----------------------------------------------------------------------
-// Simple allocator for type_info map's internal memory
-//----------------------------------------------------------------------
-
-LowLevelAlloc::Arena* g_type_profiler_map_memory = NULL;
-
-void* TypeProfilerMalloc(size_t bytes) {
-  return LowLevelAlloc::AllocWithArena(bytes, g_type_profiler_map_memory);
-}
-
-void TypeProfilerFree(void* p) {
-  LowLevelAlloc::Free(p);
-}
-
-//----------------------------------------------------------------------
-// Profiling control/state data
-//----------------------------------------------------------------------
-
-AddressMap<ObjectInfo>* g_type_profiler_map = NULL;
-
-//----------------------------------------------------------------------
-// Manage type_info map
-//----------------------------------------------------------------------
-
-void InitializeTypeProfilerMemory() {
-  if (g_type_profiler_map_memory != NULL) {
-    RAW_DCHECK(g_type_profiler_map != NULL, "TypeProfilerMap is NULL");
-    return;
-  }
-
-  g_type_profiler_map_memory =
-      LowLevelAlloc::NewArena(0, LowLevelAlloc::DefaultArena());
-
-  g_type_profiler_map =
-      new(TypeProfilerMalloc(sizeof(*g_type_profiler_map)))
-          AddressMap<ObjectInfo>(TypeProfilerMalloc, TypeProfilerFree);
-}
-
-}  // namespace
-
-void InsertType(void* address, size_t size, const std::type_info& type) {
-  SpinLockHolder lock(&g_type_profiler_lock);
-  InitializeTypeProfilerMemory();
-
-  g_type_profiler_map->Insert(address, ObjectInfo(size, &type));
-}
-
-void EraseType(void* address) {
-  SpinLockHolder lock(&g_type_profiler_lock);
-  InitializeTypeProfilerMemory();
-
-  ObjectInfo obj;
-  g_type_profiler_map->FindAndRemove(address, &obj);
-}
-
-const std::type_info* LookupType(const void* address) {
-  SpinLockHolder lock(&g_type_profiler_lock);
-  InitializeTypeProfilerMemory();
-
-  const ObjectInfo* found = g_type_profiler_map->Find(address);
-  if (found == NULL)
-    return NULL;
-  return found->type;
-}
-
-#endif  // defined(TYPE_PROFILING)